The sailor, slumped in his chair, failed to change course as the ship passed through the Sound of Mull in February on its way from Belfast to Skogn in Norway to become stuck off the west coast near Kilchoan.

The 423ft ship was grounded for almost two days, although no one was hurt in the incident.

The MAIB noted a catalogue of errors, including having no lookout on the bridge, the alarm system being switched off and shortcomings in safety on board the ship.

The 36-year-old chief officer was relieved from watch duty about 6pm that day and retired to his cabin.